“The pension services industry has long been a vital part of Surrey’s economy, but these cuts are the latest in an alarming trend of highly profitable finance firms turning their back on the county.

“Unite will continue to consult and support our members throughout this process and we call on Diligenta to think again about where their priorities lie: staff and customers, or meagre savings.”

A Diligenta spokesman says: “We can confirm that we are consulting with a number of employees about changes to our location strategy. These changes relate to three Diligenta locations: Salisbury, Exeter and Dorking.

The firm says Peterborough, Bristol, Liverpool and Basingstoke will continue to be “core locations”.

He says: “These changes are part of an ongoing process to consolidate our locations. We can confirm that Peterborough, Bristol, Liverpool, Basingstoke will continue to be core Diligenta locations and will not be impacted by these changes. We remain focused on the long term sustainability of our business and committed to ongoing investment in the UK.

“We anticipate that these changes will impact around 130 roles over the next 12 months. We are committed to supporting impacted employees throughout the process and we are in regular dialogue with employee representative bodies, which have been consulted about these changes.”

An Aviva spokeswoman says: “Diligenta supports a small part of Aviva’s customer service for Aviva’s corporate pensions customers at our Dorking site.

“Aviva has previously announced that it will maintain a considerable customer service team at its Dorking site serving our corporate pension customers and we do not expect any disruption to service standards due to the changes announced by Diligenta.”